Home / 345,448.28-518,172.42-134,938.60

Finding the Fourth Proportional to 345,448.28, 518,172.42 and 134,938.60

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Solution

The fourth proportional to 345,448.28, 518,172.42 and 134,938.60 is: 202,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,448.28 : 518,172.42 = 134,938.60 : x
  2. Step 2: Convert to fraction form
    345,448.28/518,172.42 = 134,938.60/x
  3. Step 3: Cross multiply
    345,448.28x = 518,172.42 × 134,938.60
  4. Step 4: Simplify right side
    345,448.28x = 69,921,459,617.98
  5. Step 5: Solve for x
    x = 69,921,459,617.98/345,448.28
  6. Step 6: Final answer
    x = 202,407.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.